Door-operating mechanism.



W. B. HARRIS.

DOOR OPERATING MECHANISM.

APPLICATION rILxzD APB. 22, 1914.

1,1 1 8,764. Patented Nov. 24, 1914.

v/@N Q WILLIAMELHABRIS, oF soo'r'rsnono, ALABAMA, `Assreflaoufoli oNE-ALF 'ro` C. L.`

JARRETT, oF SPRINGFIELD, MrssoURI.'

y noon-OPERATING MECHANISM."

Specicaticn o1' Letters Patent.

Patented Nev. 24, 1914.

Appiieatifm mea Aprn 22, `1914. serial Nasaaeso.

To all whom 'it may concern:

Be it known that I, VILLIAM E. HARms, a citizen of the United States, and aresident of Scottsboro, in the county of Jackson and State of Alabama, have invented a freight car doors, or other doors of like character, arranged to slide over and away from over the dooropening, wherein a track bar is provided pivoted intermediate its ends for swinging movement, the door being mounted to run on the track bar.

The present invention is an` improvement over my prior Patent #1,087,764, granted February 17, 19,14, and has for its more especial object to provide mechanism for operating the track bar.`

In the drawings: Figure 1 is a partial side view ofa car having a sliding door, and showing the parts with the door closed, Fig. 2 is a similar view showing the parts with the door open, Fig. 3 is an enlarged detail perspective view of the outer end of the track bar, Fig.` 4 :is a section on the line 4--4 of Fig. 2,` with the chain removed, and Fig. 5 is a perspective view of the holder for the chain.

The present embodiment of the invention is shown in connection with the door 1 of a freight car 2, the saidycar having a door opening 3, and the door is provided with wheels, not shown, which engage within a tubular track bar 4 and run within the track `bar on a track provided for this purpose, over and away from over the door opening.

The track bar 4 is pivotally connected with the substantially U-shaped hanger 5, secured to the car at one side of the door opening and above the same, and the track bar is provided `intermediate its ends with a bearing 6, which is designed to register` with openings in the arms of the bracket, and a pivot pin 7 is passed through the openings and the bearing to pivotally connect the track bar to the hanger. A stop 8 is secured to the side of the car in spaced relation with respect to the door opening and in inclined position for engagement bythe door when it is opened to limit the movement of the door. The door is mounted to run freely on the track bar and is opened and closed bv tiltingthe bar, as indicated in Figs. 1 and 2. lVhen the outer end ofthe track baris depressed, the door will Irun toward the said. outer end until it engages the` stop 8,while when the outer end of the track baris lifted, the door will run over the opening, and astop 9 is provided at the opposite side of the door openingfrom the stop 8 to hold the doorin `position over the opening.` ,i

The i mechanismwfor swinging the track bar is arranged at the outer end of the track bar.` i `A substantially I-shaped bracket 10, secured tothe outer end of the track bar in the manner shown in Fig. 3, is provided with a pair of spaced parallel depending lugs 1l on its under side, and a pin 12 is journaled in the lugs. A roller 13 is journaled on the pin between the lugs, and the said roller is provided with oppositely extending radial arms 14 and 15, respectively. Each of the arms is provided with a perforation in its outer end, and chains 16 and 17 are connected with the arms. The chain 16 is connected with the arm 14, and the said chain extends upwardly from the arm over a pulley 1S. The pulley is secured to a stub shaft 19, which is journaled in an opening in a block 20, secured to the side of the car 2 in any suitable manner, and in anopening in the lower end of `a brace arm 21. The upper end of the brace arm is secured to the side of thecar by means of a bolt and nut 22, and the pulley is free to rotate between the block and the arm. The free end of the chain 16 depends from the pulley as shown, and the said end is provided with a ring 23, for convenience in grasping the same. The chain 17 which is connected to the arm 15 of the roller `depends directly downward, and the said chain is provided at its free end with a ring 24.

In operation, when the parts are in the position of Fig. 1, and it is desired to open the door, traction is made on the chain 17, by means of the ring 23 su'liicient to swing the outer end of the track bar downwardly. The door will run on the track bar until it engages the stop 8. When it isdesired to close the door, traction is made on the chain 16, by means of the ring 23, to swing the outer end of the track bar upward, as indicated in Fig. l.` It will be noticed that means is provided for temporarily holding the track bar inv position to close the door during the closing of the door. The said means 'comprises' a bracket 25, secured to the car below and a little to one side of 'the position occupied by the chain -17 Whenfthe outer end of the track bar is 'lifted The bracket wis provided with a pair of oppositely arranged parallel spaced spurs or lugs 26, for engaging a vlink of :the chain to temporarily hold the track bar in the position mentioned. The object in arranging `the `bracket laterally is =to permit the-chain to disengage itself of its own weight from Ithe spurs or lugs after the door lhas closed.

I claim z- Means lfor swinging and locking an oscill'ati'ng door -track, comprising Iin combination with the ltrack yoit a bracket vconnected fto oneend ofthe track and having a pair of laterally spaced lugs depending `below the track, `.zarol'ler fpivoted vbetween the lugs on an axis vtransverse vto the track, said roller beingprovided with radial arms extending in opposite directions, 'a chain connected to each arm, la `liXedpulley arranged adjacent .tothe end .of the track provided with the Aa `pair of vlaterally ispaced `fingers 'extending toward the chain passing `over the pulley and downwardly, and adapted lto receive `a the 'track -in adjusted position.`

YWIL'LIM HARRIS.

Vi'tnesses fC. 50.V 'OW-ENS, I XVM. T. sLAssrrEn.

:Copies of'thistpitent mybe-obtanedforxve cents'f-each, ,by addressing the iCommissioner `of Patent-s.

` Washington, D.

-lin'k'of thechainfb'ctvveen the Itingersto hold y 

